20 Liter Hiking Backpack: Crafted from high-quality, lightweight, and durable materials, this backpack is designed for outdoor enthusiasts. Perfect for hiking, cycling, day trips, and various adventures, it serves as a reliable companion. Dimensions: 18.50 x 10.62 x 4.72 inches (472712CM). Please verify size before ordering. Spacious Design: The main compartment offers ample space for clothing and daily essentials, complete with a dedicated water bottle compartment. A zippered front pocket provides easy access to small items, while mesh side pockets are ideal for additional water bottles or umbrellas. Note: Water bottle not included. Safety Features: Reflective strips on the front pocket and shoulder straps enhance visibility during nighttime activities. The chest strap includes a built-in whistle for added safety and convenience. Comfortable Fit: This outdoor backpack features adjustable shoulder straps, a chest strap, and a waist belt to evenly distribute weight and reduce strain. The honeycomb sponge panel promotes breathability, ensuring comfort during extended wear. Versatile Use: This backpack is designed to foster good storage habits and offers enough space for various activities. Ideal for trips, excursions, visits to zoos or museums, and other outdoor events, it is easy to carry and adapt to your needs.